GB1432419A - Process for producing cellular polyolefin - Google Patents
Process for producing cellular polyolefinInfo
- Publication number
- GB1432419A GB1432419A GB3002273A GB3002273A GB1432419A GB 1432419 A GB1432419 A GB 1432419A GB 3002273 A GB3002273 A GB 3002273A GB 3002273 A GB3002273 A GB 3002273A GB 1432419 A GB1432419 A GB 1432419A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyolefine
- polytetrafluoroethylene
- cellular
- polyolefines
- extruder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
1432419 Cellular polyolefines UNION CARBIDE CANADA Ltd 25 June 1973 [29 Sept 1972] 30022/73 Heading C3C Cellular polyolefines, e.g. polyethylene, are made by injecting a gas inert to the polyolefine, e.g. nitrogen, into a molten mass of a C 2 _ 4 olefine, which has been mixed with 0À01-0À20% by wt. of a finely divided polytetrafluoroethylene as a nucleating agent, the molten mass being maintained below the m.p. of the polytetrafluoroethylene, while continuing the mixing, and then cooling the mass. The polytetrafluoroethylene may be mixed with the polyolefine as an aqueous dispersion in an extruder, pelletized and then fed into an extruder where nitrogen is injected and the resultant cellular polyolefine is then extruded.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA152,854A CA977099A (en) | 1972-09-29 | 1972-09-29 | Process for producing cellular polyolefin |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1432419A true GB1432419A (en) | 1976-04-14 |
Family
ID=4094560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3002273A Expired GB1432419A (en) | 1972-09-29 | 1973-06-25 | Process for producing cellular polyolefin |
Country Status (4)
Country | Link |
---|---|
CA (1) | CA977099A (en) |
DE (1) | DE2347552A1 (en) |
FR (1) | FR2201315B1 (en) |
GB (1) | GB1432419A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0045064A2 (en) * | 1980-07-25 | 1982-02-03 | The Furukawa Electric Co., Ltd. | Uniaxially drawn oriented polyolefin film for electric insulation and manufacturing method for the same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU531473B2 (en) * | 1977-12-16 | 1983-08-25 | Sumitomo Electric Industries, Ltd. | Foamed plastic insulated wire |
US5034171A (en) * | 1989-11-30 | 1991-07-23 | Air Products And Chemicals, Inc. | Process for extruding thermoplastic materials using low pressure inert gases as foaming agents |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1410006A (en) * | 1963-12-03 | 1965-09-03 | Union Carbide Canada Ltd | New improved polyethylene and process for its manufacture |
GB1143558A (en) * | 1967-03-28 |
-
1972
- 1972-09-29 CA CA152,854A patent/CA977099A/en not_active Expired
-
1973
- 1973-04-17 FR FR7313916A patent/FR2201315B1/fr not_active Expired
- 1973-06-25 GB GB3002273A patent/GB1432419A/en not_active Expired
- 1973-09-21 DE DE19732347552 patent/DE2347552A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0045064A2 (en) * | 1980-07-25 | 1982-02-03 | The Furukawa Electric Co., Ltd. | Uniaxially drawn oriented polyolefin film for electric insulation and manufacturing method for the same |
EP0045064A3 (en) * | 1980-07-25 | 1982-02-10 | The Furukawa Electric Co., Ltd. | Uniaxially drawn oriented polyolefin film for electric insulation and manufacturing method for the same |
US5006292A (en) * | 1980-07-25 | 1991-04-09 | The Furukawa Electric Co., Ltd. | Manufacturing uniaxially drawn oriented polyolefin film for electric insulation |
Also Published As
Publication number | Publication date |
---|---|
CA977099A (en) | 1975-10-28 |
FR2201315A1 (en) | 1974-04-26 |
FR2201315B1 (en) | 1976-04-09 |
DE2347552A1 (en) | 1974-04-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19930624 |